Features Used for air compressor inlet, can effectively block the dust in the air moisture. Able to reduce the compressor noise at work. Greatly help to improve the efficiency of air compressor and longevity. Suitable for oil-less air compressor. Screw Thread Type: 1/2 inch. Description: This is a great option for reducing the noise of your compressor and is a great replacement option. Ideal accessories for air compressors, quite easy to install. Used widely on the admitting port of air compressors, can greatly reduce the noise of air intake. Specifications: Used for: Filtration Suitable for: Oil-less air compressor Screw Thread Type: 1/2" Weight: 100 g(approx.) Package includes: 1 x Air Filter Package List